Electric burglar, fire, and general alarm.



H. W. OLNEY.

ELECTRIC BURGLAR, FIRE, AND GENERAL ALARM.

APPLICATION FILED MAY 21. 1913.

INVE NTOR WITNESSES Patented 001;. 26, 1915.

HARRY W. OLNEY, OF SPOKANE, WASHINGTON.

ELECTRIC BURGLAR, FIRE, AND GENERAL ALARM.

Specification of Letters Patent.

Patentc(l (lot. 2 6, 1%15.

Application filed May 21, 1913. Serial No. 769,118.

To all whom it may concern:

Be it known that I, HARRY W. OLNEY, a

citizen of the United States, residing at Spokane, in the county of Spokane and State of Washington, have invented a new and useful Electric Burglar, Fire, and General Alarm, of which the following is a specification.

My invention relates to improvements in alarm signals, and the objects of my improvement are to provide an alarm signal in which the breaking of a primary circuit closes an alarm circuit, which, when once closed, cannot be broken by manipulating the primary circuit, and to provide a secret means for reinstating the primary circuit, which issimple in construction and positive in operation. I attain these objects by the mechanism illustrated in the accompanying drawing, showing the arrangement of the different parts.

Similar characters of reference refer to similar parts throughout the view.

To provide a normally closed primary cirwit the breaking of which will close an alarm circuit which cannot be broken by manipulating the primary circuit, the battery C is electrically connected with one of the poles of an electromagnet R by the wire D, and also with the armature A of the elec; tromagnet by the wire E, and the other pole of the electromagnet R is connected with the contact stud P by the Wire F. The wire D may be extended throughout a building or over any district to be protected, and may be provided at various points where signals are to be given with circuit breakers, as at S. It will be apparent that when the primary circuit No. 1, which is normally in a closed position as shown in the drawing, is broken, as at S, the armature A will be drawn upward by the spring L until it strikes the contact P, thus breaking the circuit No. 1 at P, and that this circuit will not be closed again by the closing of the circuit breaker S. When the armature A comes in conta :t with the contact P, it closes the battery C, the wire E, the armature A, the contact P, the wire H, the signal B, and the wire J, and the signal will continue to sound an alarm until this circuit is broken. To break this circuit by remagnetizing the electromagnet R, an electrical connection is provided between the battery G and the pole of the electromagnet that is connected with the contact P by the wire F, by the wires K and U, which connection is normally broken as at T, and provided with a circuit closer S. The wires K and U, with the wire D of the primary circuit, form a new circuit No. 3 through the battery 0 and directly through the electromagnet R, which circuit when closed at T will electrify the electromagnet R and attract the armature A into contact with the contact P, thus closing the primary circuit No. 1, when the circuit No. 3 is broken at'T, and the apparatus is in its original operative position.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

A signaling system, comprising in combination, a current source, and a relay, said current source, and relay and the armature of said relay being included in a primary circuit, a series of normally closed circuit breakers at danger points in said primary circuit, a contact also in said primary circuit and in normal engagement with said armature, a spring for withdrawing said armature when the primary circuit is broken, a secondary circuit excluding said relay consisting of said armature, the current source and an alarm, a second contact also in said secondary circuit to engage said armature when this primary circuit is broken, and a third circuit also including said current source and said relay and also containing a normally open circuit closer for resetting the primary circuit.

HARRY OLNEY.

Witnesses:

J. B. McCoY, G. J. BOWMAN. 

